Make JSL, JSR absolute, and remove RTL.

The reason for doing this was because JSL, and RTL are
redundent, as they both do the same thing as JSR, and
RTS.

8 files changed, 29 insertions, 1680 deletions

diff --git a/test/add-sub.s b/test/add-sub.s
index 694931d..3dfdca4 100644
--- a/test/add-sub.s
+++ b/test/add-sub.s
@@ -8,7 +8,7 @@ reset:
 	cps		; Clear the processor status register.
 	ldx.w #$FFFF	; Reset the stack pointer.
 	txs		;
-	lsr #16		; Reset A.
+	and #0		; Reset A.
 	tab		; Reset B.
 	tax		; Reset X.
 up:
diff --git a/test/fib2.s b/test/fib2.s
index 59830a2..9bb2406 100644
--- a/test/fib2.s
+++ b/test/fib2.s
@@ -1,19 +1,9 @@
-; Variables for thread 0.
-.org $1000
-x:
-	.qword 0
-y:
-	.qword 1
-z:
-	.qword 0
-zero:
-	.qword 0
 
 .org 0
 init:
 	cps		; Clear the Processor Status register.
 start:
-	lsr #63		; Reset the accumulator.
+	and #0		; Reset the accumulator.
 	tab		;
 	tax		;
 	tay		;
@@ -30,4 +20,4 @@ fib:
 	tay		;
 	jmp fib		; No, so keep looping.
 a
-done
+d
diff --git a/test/hello-world.s b/test/hello-world.s
index 9138bc7..f3b540a 100644
--- a/test/hello-world.s
+++ b/test/hello-world.s
@@ -1,8 +1,12 @@
 ; Hello world.
 ; Writen in Sux assembly by mr b0nk 500 <b0nk@b0nk.xyz>
 
+status	= $100		; Status.
+scr	= $101		; Screen output.
+
+
 ; Initialize, and declare variables.
-.org $8000
+.org $A000
 string:
 	.byte "Hello, world!\n"
 
@@ -12,7 +16,7 @@ buffer:
 
 
 ; Get CPU into a known state.
-.org $0
+.org $8000
 reset:
 	cps		; Reset the processor status.
 	ldx.w #$FFFF	; Set up the stack pointer.
@@ -25,21 +29,22 @@ start:
 
 line_count:
 	iny		; Increment the line count.
-	cpy #$32
-	beq spin	; Have we printed 50 lines?
-	jmp start	; Keep looping until we have printed 50 lines.
+	cpy #50		; Have we printed 50 lines?
+	beq disp	; Yes, so we're done.
+	jmp start	; No, so keep looping.
 
 ; Printing sub routine.
 print:
 	lda string, x	; Get character at offset x.
 	beq line_count	; Did we find a null terminator?
-	sta $C001	; Print character.
+	sta scr		; Print character.
 	inx		; Increment offset.
 	jmp print	; Keep printing more characters.
 
 ; The other threads would clash, if we're running the same code.
 ; So, have them spin instead, please?
-.org $1000
+disp:
+	lda status
 spin:
 	nop
 	nop
@@ -58,5 +63,6 @@ spin:
 .qword spin
 .qword spin
 .qword spin
-done
+a
+d
 
diff --git a/test/input-2.s b/test/input-2.s
deleted file mode 100644
index f5cb49e..0000000
--- a/test/input-2.s
+++ /dev/null
@@ -1,412 +0,0 @@
-; Testing input.
-;
-; Writen in Sux assembly by
-; mr b0nk 500 <b0nk@b0nk.xyz>
-
-; Instruction mnemonics,
-; and opcodes.
-.org $1000
-tok:
-	.byte "dab"
-msg:
-	.byte "oof, you divided a, and b on me.\n"
-
-; Input buffer.
-.org $2000
-buffer:
-
-.org $2800
-cmd_buf:
-
-; Initalize some variables.
-.org $0
-scr_row:
-	.byte $0
-scr_col:
-	.byte $0
-a:
-	.byte $0
-b:
-	.byte $0
-c:
-	.byte $0
-d:
-	.byte $0
-e:
-	.byte $0
-string:
-	.byte "Please, type something.\n"
-string2:
-	.byte "You typed, "
-end:
-	.byte $0
-
-; String Pointer
-ptr:
-	.qword buffer
-cptr:
-	.qword cmd_buf
-tptr:
-	.qword tok
-mptr:
-	.qword msg
-
-
-; Main program
-.org $8000
-reset:
-	cps
-	ldx.w #$FFFF
-	txs
-	ldy #0
-	lda #0
-clr_buf:
-	cpy.w #$7FF
-	beq start
-	sta (ptr), y
-	iny
-	jmp clr_buf
-
-start:
-	lda #0
-	sta $C000
-	tax		; Reset x.
-	tay		; Reset y.
-	jsl clr_cbuf
-	jmp print
-
-clr_cbuf:
-	cpy.w #$3FF
-	beq clr_cbuf_end
-	sta (cptr), y
-	iny
-	jmp clr_cbuf
-clr_cbuf_end:
-	ldy #0
-	rtl
-
-rset_a:
-	lda #1
-read:
-	lda $C000	; Get control register.
-	beq rset_a	; Loop until we get a character.
-	jmp getchar	; We got a key.
-sleep:
-	lda end
-	bne spin	; Are we done with getting input?
-
-print:
-	lda string, x	; Get character at offset x.
-	beq rset_a	; Did we find a null terminator?
-	sta $C001	; Print character.
-	inx		; Increment offset.
-	cmp #$A
-	beq inc_row
-	inc scr_col
-	jmp print
-inc_row:
-	lda #0
-	sta scr_col
-	lda #$42
-	sta c
-	jsl isdown
-	jmp print	; Keep printing more characters.
-
-getchar:
-	lda $C002	; Get typed character.
-	cmp #$1B
-	beq esc
-	cmp #$A
-	beq nl		; Did the user type a newline?
-	cmp #8
-	beq bs		; Did the user type a backspace?
-	cmp #$7F
-	beq bs		; Did the user type a backspace?
-echo:
-	sta a
-	ldx scr_col
-	cpx #79
-	bne echo_print
-linewrap:
-	inc scr_row
-	ldx #0
-	stx scr_col
-	lda scr_row
-	jsl update_pos
-echo_print:
-	lda a
-	sta $C001	; Echo typed character.
-	inc scr_col	; Increment the cursor's x coordinate.
-	sta (ptr), y	; Store typed character into the input buffer.
-	iny
-	jmp rset_a	; Start getting user input.
-
-esc:
-	lda $C000	; Skip the '['.
-	lda $C000	; Get the next character.
-	beq read	; We have an error, so discard it, and go back to getting user input.
-	lda $C002	; Get the escape code.
-	sta c		; Store the escape code, until we need it.
-	jsl isup	; Check if the user pressed up.
-	lda d
-	bne esc_end
-	jsl isdown	; Check if the user pressed down.
-	lda d
-	bne esc_end
-	lda #0
-	jsl isleft	; Check if the user pressed left.
-	lda d
-	bne esc_end
-	jsl isright	; Check if the user pressed right.
-esc_end:
-	lda #0
-	sta d
-	jmp rset_a	; Go back to getting user input.
-
-isup:
-	lda scr_row	; Is the cursor at the top of the screen?
-	beq isup_done	; Yes, so return.
-	lda c		; No, so load the escape code back into the accumulator.
-	cmp #$41	; Did the user press the up arrow key?
-	beq up		; Yes, so move the cursor up.
-isup_done:
-	rtl		; End of isup.
-
-isdown:
-	lda scr_row	; Start checking the y coordinate of the cursor.
-	cmp #23		; Is the cursor at the bottom of the screen?
-	beq isdown_done	; Yes, so return.
-	lda c		; No, so load the escape code back into the accumulator.
-	cmp #$42	; Did the user press the down arrow key?
-	beq down	; Yes, so move the cursor down.
-isdown_done:
-	rtl		; End of isdown.
-
-isright:
-	lda scr_col	; Start checking the x coordinate of the cursor.
-	cmp #79		; Is the cursor at the far right of the screen?
-	beq isright_end	; Yes, so return.
-	lda c		; No, so load the escape code back into the accumulator.
-	cmp #$43	; Did the user press the right arrow key?
-	beq right	; Yes, so move the cursor right.
-isright_end:
-	rtl		; End of isright.
-
-isleft:
-	lda scr_col	; Is the cursor at the far left of the screen?
-	beq isleft_done	; Yes, so return.
-	lda c		; No, so load the escape code back into the accumulator.
-	cmp #$44	; Did the user press the left arrow key?
-	beq left	; Yes, so move the cursor left.
-isleft_done:
-	rtl		; End of isleft.
-
-up:
-	dec scr_row
-	jsl update_pos
-	lda #1
-	sta d
-	jmp isup_done
-down:
-	inc scr_row
-	jsl update_pos
-	lda #1
-	sta d
-	jmp isdown_done
-right:
-	inc scr_col
-	jsl update_pos
-	jmp isright_end
-left:
-	dec scr_col
-	jsl update_pos
-	lda #1
-	sta d
-	jmp isleft_done
-
-update_pos:
-	lda #$1B	; Print an escape character
-	sta $C001	; to the screen.
-	lda #$5B	; Print '['
-	sta $C001	; to the screen, and start the escape sequence.
-	jsl getrow	; Start printing the row number to the screen.
-	jsl getcol	; Start printing the column number to the screen.
-	lda #$48	; Print 'H'
-	sta $C001	; to the screen.
-	rtl		; End of update_pos.
-getrow:
-	lda scr_row	; Get the cursor's y coordinate.
-	div #10		; Divide A by 10.
-	adc #$30	; Convert it to ascii, and
-	sta $C001	; print to the screen.
-	tba		; Get the remainder.
-	adc #$30	; Convert it to ascii, and
-	sta $C001	; print to the screen.
-	rtl		; End of getrow.
-getcol:
-	lda #$3B	; Print ';'
-	sta $C001	; to the screen.
-	lda scr_col	; Get the cursor's x coordinate.
-	div #10		; Divide A by 10.
-	adc #$30	; Convert it to ascii, and
-	sta $C001	; print to the screen.
-	tba		; Get the remainder.
-	adc #$30	; Convert it to ascii, and
-	sta $C001	; print to the screen.
-	rtl		; End of getrow.
-
-nl:
-	lda #0
-	sta scr_col
-	sta (ptr), y	; Store said terminator into the input buffer.
-	lda #$42
-	sta c
-	jsl isdown
-	ldy.w #0	; Reset y, to print the result.
-	jsl dabbed
-	beq start
-	ldy #0
-	jmp result
-
-back:
-	sta $C001	; Print backspace.
-	lda #0		; Put a null terminator, in place of the backspace.
-	sta (ptr), y	; Place it into the input buffer.
-	dey		; Decrement buffer offset.
-	dec scr_col
-	jmp read	; Get next character.
-
-bs:
-	cpy #0		; Are we at the start of the buffer?
-	beq rset_a	; We are, so do not store the backspace into the buffer.
-	jmp back	; We are not, so add the backspace to the buffer.
-
-result:
-	ldx scr_col
-	cpx #79
-	bne result_print
-linewrap2:
-	inc scr_row
-	ldx #$0
-	stx scr_col
-	jsl update_pos
-result_print:
-	lda string2, y
-	beq rset_y	; Reset y, if we hit the null terminator.
-	sta $C001	; Print 'You have typed, '
-	inc scr_col	; Increment the cursor's x coordinate.
-	iny		; Increment offset.
-	jmp result	; Keep printing.
-
-rset_y:
-	ldy.w #0	; Reset y.
-	ldx.w #0	; Reset x.
-	lda.w #0	; Reset a.
-	jmp print_buf	; Print the input buffer.
-dabbed:
-	lda (ptr), y	; Get a character from the input buffer.
-	beq dab_nend	; Are we done with printing the buffer?
-	cmp (tptr), y
-	bcs dab_nend
-	beq chk_str
-	bcc dab_nend
-chk_str:
-	iny
-	cpy #3
-	bne dabbed
-	ldy #0
-pnt_msg:
-	ldx scr_col
-	cpx #79
-	bne msg_pnt
-linewrap3:
-	inc scr_row
-	ldx #0
-	stx scr_col
-	jsl update_pos
-msg_pnt:
-	lda (mptr), y	; Get a character from the input buffer.
-	beq dab_eqnd	; Are we done with printing the buffer?
-	sta $C001	; Print said character.
-	inc scr_col	; Increment the cursor's x coordinate.
-	iny
-	jmp pnt_msg	; Keep printing the buffer.
-dab_nend:
-	lda #1
-	jmp dab_end
-dab_eqnd:
-	lda #0
-	jmp dab_end
-dab_end:
-	rtl
-
-
-
-print_buf:
-	ldx scr_col
-	cpx #79
-	bne buf_print
-linewrap4:
-	inc scr_row
-	ldx #0
-	stx scr_col
-	jsl update_pos
-buf_print:
-	lda (ptr), y	; Get a character from the input buffer.
-	beq cmd_clr	; Are we done with printing the buffer?
-	sta $C001	; Print said character.
-	inc scr_col	; Increment the cursor's x coordinate.
-	iny
-	jmp print_buf	; Keep printing the buffer.
-
-cmd_clr:
-	lda #0
-	sta scr_col
-	lda #$42
-	sta c
-	jsl isdown
-	jmp start
-
-scr_to_buf:
-	tax
-	mul #80
-	adc scr_col
-	tay
-	txa
-	rtl
-
-spin:
-	nop
-	nop
-	nop
-	jmp spin
-
-.org $1000
-v
-.org $1100
-v
-.org $1200
-v
-.org $8000
-v
-.org $8100
-v
-.org $8200
-v
-.org $8300
-v
-.org $FFC0
-.qword reset
-
-.org $FF50
-.qword spin
-.qword spin
-.qword spin
-.qword spin
-.qword spin
-.qword spin
-.qword spin
-.org $FF50
-v
-done
-
diff --git a/test/input-3.s b/test/input-3.s
deleted file mode 100644
index 35547a7..0000000
--- a/test/input-3.s
+++ /dev/null
@@ -1,900 +0,0 @@
-; Testing input.
-;
-; Writen in Sux assembly by
-; mr b0nk 500 <b0nk@b0nk.xyz>
-
-; Instruction mnemonics,
-; and opcodes.
-.org $1000
-tok:
-	.byte "dab"
-msg:
-	.byte "oof, you divided a, and b on me.\n"
-
-; Input buffer.
-.org $2000
-buffer:
-
-.org $4000
-cmd_buf:
-
-
-; Initalize some variables.
-.org $0
-scr_row:
-	.byte $0
-scr_col:
-	.byte $0
-scr_trow:
-	.byte $0
-scr_tcol:
-	.byte $0
-scr_ptr:
-	.word $0
-a:
-	.byte $0
-b:
-	.byte $0
-c:
-	.byte $0
-d:
-	.byte $0
-e:
-	.byte $0
-f:
-	.byte $0
-string:
-	.byte "Please, type something.\n"
-string2:
-	.byte "You typed, "
-end:
-	.byte $0
-bits:
-	.byte $80
-	.byte $40
-	.byte $20
-	.byte $10
-	.byte $08
-	.byte $04
-	.byte $02
-	.byte $01
-bitmask:
-	.byte $0
-bitabl:
-	.qword $0
-	.qword $0
-scr_str:
-.byte $0
-scr_end:
-.byte $0
-wrapped:
-.byte $0
-
-; Pointers
-ptr:
-	.qword buffer
-cptr:
-	.qword cmd_buf
-tptr:
-	.qword tok
-mptr:
-	.qword msg
-
-; Main program
-.org $8000
-reset:
-	cps
-	ldx.w #$FFFF
-	txs
-	ldy #0
-	lda #23
-	sta scr_end
-	lda #0
-	sta scr_str
-	ldx #8
-	sta.q bitabl
-	sta.q bitabl, x
-	tax
-	jsl clr_buf
-	jmp start
-clr_buf:
-	lda #0
-	cpy.w #$1FFF
-	beq clr_buf_end
-	sta (ptr), y
-	iny
-	jmp clr_buf
-clr_buf_end:
-	ldy.w #0
-	rtl
-
-start:
-	lda #0
-	tax
-	sta $C000
-	phy #2
-	ldy.w #0
-	jsl clr_cbuf
-	ply #2
-	jmp print
-
-clr_cbuf:
-	cpy.w #$3FF
-	beq clr_cbuf_end
-	sta (cptr), y
-	iny
-	jmp clr_cbuf
-clr_cbuf_end:
-	rtl
-
-pull_y:
-	ply #2
-rset_a:
-	lda #0
-	sta $C000
-	inc
-read:
-	lda $C000	; Get control register.
-	beq rset_a	; Loop until we get a character.
-	jsl getchar	; We got a key.
-	beq parse	; We got a newline, so start parsing the line.
-	jmp rset_a	; We didn't get a newline, so keep getting more characters.
-
-print:
-	phy #2
-	txy
-	lda string, y	; Get character at offset x.
-	beq pull_y	; Did we find a null terminator?
-	ply #2
-	inx
-	jsl print_char
-	jmp print
-
-getbit:
-	clc
-	lda scr_str
-	bne getbt0
-	ldx scr_row
-	jmp getbt1
-getbt0:
-	lda scr_row
-	adc scr_str
-	tax
-getbt1:
-	jsl bitpos
-	ldb bitabl, x
-	aba
-	cmp #1
-	jmp bitout
-
-;putbit:
-;	ldx scr_row
-;putbt1:
-;	bcc setbit
-
-
-clrbit:
-	jsl bitpos
-	xor #$FF
-	ldb bitabl, x
-	aba
-bitsav:
-	sta bitabl, x
-bitout:
-	ldx bitmask
-	rtl
-
-setbit:
-	jsl bitpos
-	ldb bitabl, x
-	oab
-	jmp bitsav
-
-bitpos:
-	stx bitmask
-	txa
-	and #7
-	tax
-	lda bits, x
-	pha #1
-	lda bitmask
-	lsr #3
-	tax
-	pla #1
-	rtl
-
-
-getchar:
-	lda $C002	; Get typed character.
-	ldb #0
-	stb e
-	pha #1
-	phy #2
-	cmp #10
-	beq cmd_cpy
-getchar_pnt:
-	ply #2
-	pla #1
-	ldb e
-	bne reset_row
-getchar_pnt1:
-	jsl print_char
-	lda a
-	cmp #10
-	beq getchar_line
-	jmp getchar_char
-reset_row:
-	ldb e
-	stb scr_row
-	jmp getchar_pnt1
-
-
-cmd_cpy:
-	ldb scr_row
-	stb e
-	jsl findst
-	clc
-	lda scr_row
-	adc scr_str
-	mul #80
-	tay
-	ldx.w #$0
-cmd_cpy_strt:
-	lda (ptr), y
-	beq getchar_pnt
-	phy #2
-	txy
-	sta (cptr), y
-	inx
-	ply #2
-	iny
-	jmp cmd_cpy_strt
-getchar_line:
-	lda #0
-	jmp getchar_end
-getchar_char:
-	lda #1
-getchar_end:
-	rtl
-
-findst:
-	jsl getbit
-	bcc findst_done
-	dec scr_row
-	bpo findst
-	inc scr_row
-findst_done:
-	rtl
-
-parse:
-	lda #0
-	tax
-	jsl dabbed
-	beq start
-	lda #0
-	tax
-	jmp result
-
-print_char:
-	sta a
-	cmp #$1B
-	beq esc
-	cmp #$A
-	beq nl		; Did the user type a newline?
-	cmp #$C
-	beq clr_scr
-	cmp #19
-	beq en_step
-	cmp #18
-	beq dis_step
-	cmp #8
-	beq bs		; Did the user type a backspace?
-	cmp #$7F
-	beq bs		; Did the user type a backspace?
-	sta a
-printc:
-	lda a
-	sta (ptr), y	; Store typed character into the input buffer.
-	inc scr_col	; Increment the cursor's x coordinate.
-	iny
-printc_2:
-	ldb #1
-	stb f
-	ldb scr_col
-	cpb #80
-	bcs printc_4
-printc_3:
-	sta $C001	; Echo typed character.
-	ldb f
-	beq printc_wrap
-	jmp printc_end
-printc_4:
-	ldb scr_row
-	cpb #23
-	bcs printc_scrl
-printc_5:
-	ldb #0
-	stb f
-	jmp printc_3
-printc_scrl:
-	sta $C001	; Echo typed character.
-	clc
-	lda #1
-	sta wrapped
-	jsl scrl_down
-printc_wrap:
-	ldb #0
-	stb scr_col
-	ldb scr_row
-	cpb #23
-	bcs printc_wrap2
-printc_wrap1:
-	inc scr_row
-printc_wrap2:
-	phx #2
-	clc
-	lda scr_row
-	adc scr_str
-	tax
-	jsl setbit
-	plx #2
-	jsl update_pos
-printc_end:
-	rtl
-
-nl:
-	lda #0
-	sta (ptr), y	; Store said terminator into the input buffer.
-	sta scr_col
-	lda scr_row
-	cmp #23
-	bne nl_inc
-	jsl scrl_down
-	lda #10
-	sta a
-	jmp printc_end
-nl_inc:
-	inc scr_row
-	jsl update_pos
-	lda #10
-	sta a
-	jmp printc_end
-
-clr_scr:
-	lda #23
-	sta scr_end
-	lda #0
-	sta scr_str
-	ldx #8
-	sta.q bitabl
-	sta.q bitabl, x
-	tay
-	jsl clr_buf
-	sta scr_col
-	sta scr_row
-	jsl update_pos
-	lda #$C
-	sta $C001
-	jmp printc_end
-
-en_step:
-	lda $C010
-	beq step_en
-	jmp stp_end
-step_en:
-	lda #1
-	sta $C010
-	jmp stp_end
-
-dis_step:
-	lda $C010
-	bne step_dis
-	jmp stp_end
-step_dis:
-	lda #0
-	sta $C010
-stp_end:
-	jmp printc_end
-
-back:
-	lda #$7F
-	sta $C001
-	dey		; Decrement buffer offset.
-	lda #0		; Put a null terminator, in place of the backspace.
-	sta (ptr), y	; Place it into the input buffer.
-	dec scr_col
-	jsl update_pos
-	jmp printc_end	; Get next character.
-
-bs:
-	lda scr_col	; Are we at the start of the buffer?
-	beq back_wrap
-	jmp back	; We are not, so add the backspace to the buffer.
-back_wrap:
-	jsl getbit
-	bcs back_wrap1
-	jmp printc_end
-back_wrap1:
-	lda scr_row
-	beq back_wrap2
-	jmp backwrp
-back_wrap2:
-	lda scr_str
-	bne back_scrl
-	jmp printc_end
-back_scrl:
-	clc
-	jsl scrl_up
-	inc scr_row
-backwrp:
-	clc
-	lda scr_row
-	adc scr_str
-	tax
-backwrp2:
-	dec scr_row
-	jsl clrbit
-	ldb #80
-	stb scr_col
-	jsl update_pos
-	jmp back
-
-esc:
-	lda $C000	; Skip the '['.
-	lda $C002
-	cmp #$1B
-	beq shftesc
-	lda $C000	; Get the next character.
-	beq printc_end	; We have an error, so discard it, and go back to getting user input.
-	lda $C002	; Get the escape code.
-	sta c		; Store the escape code, until we need it.
-	lda #0
-	sta d
-	jsl isup	; Check if the user pressed up.
-	lda d
-	bne esc_end
-	jsl isdown	; Check if the user pressed down.
-	lda d
-	bne esc_end
-	lda #0
-	jsl isleft	; Check if the user pressed left.
-	lda d
-	bne esc_end
-	jsl isright	; Check if the user pressed right.
-esc_end:
-	lda #0
-	sta d
-	jmp printc_end	; Go back to getting user input.
-
-shftesc:
-	lda $C000	; Skip the '['.
-	lda $C000	; Get the next character.
-	beq printc_end	; We have an error, so discard it, and go back to getting user input.
-	lda $C002	; Get the escape code.
-	sta c		; Store the escape code, until we need it.
-	lda #0
-	sta d
-	jsl isshftup	; Check if the user pressed shift+up.
-	lda d
-	bne shftesc_end
-	jsl isshftdown	; Check if the user pressed shift+down.
-shftesc_end:
-	lda #0
-	sta d
-	jmp printc_end	; Go back to getting user input.
-
-isup:
-	lda c		; No, so load the escape code back into the accumulator.
-	cmp #$41	; Did the user press the up arrow key?
-	bne isup_done	; Yes, so return.
-	lda #1
-	sta d
-	lda scr_row	; Is the cursor at the top of the screen?
-	beq isup_scrl	; Yes, so return.
-isup_2:
-	lda c		; No, so load the escape code back into the accumulator.
-	cmp #$41	; Did the user press the up arrow key?
-	beq up		; Yes, so move the cursor up.
-	jmp isup_done
-isup_scrl:
-	lda scr_str
-	beq isup_done
-	jsl scrl_up
-isup_done:
-	rtl		; End of isup.
-
-isdown:
-	lda c		; No, so load the escape code back into the accumulator.
-	cmp #$42	; Did the user press the down arrow key?
-	bne isdown_done
-	lda scr_row	; Start checking the y coordinate of the cursor.
-	cmp #23		; Is the cursor at the bottom of the screen?
-	beq isdown_scrl	; Yes, so return.
-	lda c		; No, so load the escape code back into the accumulator.
-	cmp #$42	; Did the user press the down arrow key?
-	beq down	; Yes, so move the cursor down.
-	jmp isdown_done
-isdown_scrl:
-	lda scr_row
-	sta scr_trow
-	lda scr_col
-	sta scr_tcol
-	jsl scrl_down
-	lda scr_trow
-	sta scr_row
-	lda scr_tcol
-	sta scr_col
-isdown_done:
-	rtl		; End of isdown.
-
-isright:
-	lda c		; No, so load the escape code back into the accumulator.
-	cmp #$43	; Did the user press the right arrow key?
-	bne isright_done
-	lda scr_col	; Start checking the x coordinate of the cursor.
-	cmp #79		; Is the cursor at the far right of the screen?
-	beq isright_wrp	; Yes, so check if this is a wrapped line.
-	jmp right	; No, so move the cursor right, like normal.
-isright_wrp:
-	inc scr_row
-	jsl getbit
-	bcs wrap_inc
-	dec scr_row
-	jmp isright_done
-isright_scrl:
-	lda scr_str
-	beq isright_end
-	lda #1
-	sta wrapped
-	jsl scrl_down
-	dec scr_row
-	jmp isright_end
-wrap_inc:
-	lda #0
-	sta scr_col
-	lda scr_row
-	cmp #23
-	bcs isright_scrl
-isright_end:
-	jsl update_pos
-isright_done:
-	lda #0
-	sta wrapped
-	rtl		; End of isright.
-
-isleft:
-	lda c
-	cmp #$43
-	beq isleft_done
-	lda scr_col	; Is the cursor at the far left of the screen?
-	beq isleft_wrp	; Yes, so start checking if this is a wrapped line.
-	lda c		; No, so load the escape code back into the accumulator.
-	cmp #$44	; Did the user press the left arrow key?
-	beq left	; Yes, so move the cursor left.
-	jmp isleft_done
-isleft_wrp:
-	jsl getbit
-	bcs wrap_dec
-	jmp isleft_done
-wrap_dec:
-	lda scr_row
-	beq wrap_dec1
-	lda #1
-	sta wrapped
-	dec scr_row
-wrap_dec1:
-	lda #79
-	sta scr_col
-	lda #1
-	sta d
-	lda scr_row
-	beq isleft_scrl
-	jmp isleft_end
-isleft_scrl:
-	lda wrapped
-	bne isleft_end
-	lda scr_str
-	beq isleft_done
-	jsl scrl_up
-	jmp isleft_done
-isleft_end:
-	jsl update_pos
-isleft_done:
-	lda #0
-	sta wrapped
-	rtl		; End of isleft.
-
-up:
-	dec scr_row
-	jsl update_pos
-	lda #1
-	sta d
-	jmp isup_done
-down:
-	inc scr_row
-	jsl update_pos
-	lda #1
-	sta d
-	jmp isdown_done
-right:
-	inc scr_col
-	jsl update_pos
-	jmp isright_done
-left:
-	dec scr_col
-	jsl update_pos
-	lda #1
-	sta d
-	jmp isleft_done
-
-isshftup:
-	lda c		; Load the escape code back into the accumulator.
-	cmp #$41	; Did the user press the up arrow key?
-	bne isshftup_done
-	lda #1
-	sta d
-	lda scr_str
-	beq isshftup_done
-	jmp shftup
-isshftup_done:
-	rtl
-
-isshftdown:
-	lda c		; Load the escape code back into the accumulator.
-	cmp #$42	; Did the user press the down arrow key?
-	bne isshftdown_done
-	lda #1
-	sta d
-	lda scr_end
-	cmp #71
-	bcs isshftdown_done
-	jmp shftdown
-isshftdown_done:
-	rtl
-
-shftup:
-	jsl scrl_up
-	lda #1
-	sta d
-	jmp isshftup_done
-
-shftdown:
-	jsl scrl_down
-	lda #1
-	sta d
-	jmp isshftdown_done
-
-update_pos:
-	ldb #1
-	stb f
-	clc
-	lda scr_row
-	adc scr_str
-	clc
-	mul #80
-	clc
-	adc scr_col
-	tay
-	lda #$1B	; Print an escape character
-	sta $C001	; to the screen.
-	lda #$5B	; Print '['
-	sta $C001	; to the screen, and start the escape sequence.
-	jsl getrow	; Start printing the row number to the screen.
-	jsl getcol	; Start printing the column number to the screen.
-	lda #$48	; Print 'H'
-	sta $C001	; to the screen.
-	rtl		; End of update_pos.
-
-getrow:
-	lda scr_row	; Get the cursor's y coordinate.
-	div #10		; Divide A by 10.
-	adc #$30	; Convert it to ascii, and
-	sta $C001	; print to the screen.
-	tba		; Get the remainder.
-	adc #$30	; Convert it to ascii, and
-	sta $C001	; print to the screen.
-	rtl		; End of getrow.
-
-getcol:
-	lda #$3B	; Print ';'
-	sta $C001	; to the screen.
-	lda scr_col	; Get the cursor's x coordinate.
-	div #10		; Divide A by 10.
-	clc
-	adc #$30	; Convert it to ascii, and
-	sta $C001	; print to the screen.
-	tba		; Get the remainder.
-	clc
-	adc #$30	; Convert it to ascii, and
-	sta $C001	; print to the screen.
-	rtl		; End of getrow.
-
-scrl_down:
-
-	inc scr_str
-	inc scr_end
-	lda #$1B	; Print an escape character
-	sta $C001	; to the screen.
-	lda #$5B	; Print '['
-	sta $C001	; to the screen, and start the escape sequence.
-	lda #$54	; Print 'T'
-	sta $C001	; to the screen, and end the escape sequence.
-	lda wrapped
-	beq scrldn_save
-scrldn1:
-	jsl rdrw_row
-	lda wrapped
-	beq scrldn_load
-	jmp scrldn_end
-scrldn_save:
-	lda scr_row
-	pha #1
-	lda scr_col
-	pha #1
-	jmp scrldn1
-scrldn_load:
-	pla #1
-	sta scr_col
-	pla #1
-	sta scr_row
-	jsl update_pos
-scrldn_end:
-	lda #0
-	sta wrapped
-scrldn_done:
-	rtl
-
-scrl_up:
-	dec scr_str
-	dec scr_end
-	lda #$1B	; Print an escape character
-	sta $C001	; to the screen.
-	lda #$5B	; Print '['
-	sta $C001	; to the screen, and start the escape sequence.
-	lda #$53	; Print 'S'
-	sta $C001	; to the screen, and end the escape sequence.
-	lda scr_row
-	pha #1
-	lda scr_col
-	pha #1
-	lda #0
-	sta scr_row
-	jsl rdrw_row
-	pla #1
-	sta scr_col
-	pla #1
-	sta scr_row
-	jsl update_pos
-scrlup_done:
-	rtl
-
-rdrw_row:
-	lda #0
-	sta scr_col
-	jsl update_pos
-rdrow_st:
-	lda (ptr), y
-	beq rdrow_inc
-	sta $C001
-rdrow_inc:
-	inc scr_col
-	lda (ptr), y
-	beq rdrow_skip
-	iny
-rdrow_inc1:
-	lda scr_col
-	cmp #80
-	bcs rdrow_end
-	jmp rdrow_st
-rdrow_skip:
-	jsl update_pos
-	jmp rdrow_inc1
-rdrow_end:
-	lda #0
-	sta scr_col
-	jsl update_pos
-rdrow_done:
-	rtl
-
-
-;rdrw_scr:
-;	lda #$C
-;	sta $C001
-;	lda scr_col
-;	sta scr_tcol
-;	lda scr_row
-;	sta scr_trow
-;	lda #0
-;	sta scr_col
-;	sta scr_row
-;	phy #2
-;	jsl update_pos
-;	ply #2
-;	ldx scr_ptr
-;	phy #2
-;	txy
-;	lda (ptr), y
-;	sta $C001
-;	ply #2
-;	rtl
-
-result:
-	phy #2
-	txy
-	lda string2, y
-	beq rset_y	; Reset y, if we hit the null terminator.
-	ply #2
-	jsl print_char	; Print 'You have typed, '
-	inx
-	jmp result	; Keep printing.
-
-rset_y:
-	ply #2
-	lda #0		; Reset a.
-	tax		; Reset y.
-	jmp print_buf	; Print the input buffer.
-
-dabbed:
-	phy #2
-	txy
-	lda (cptr), y	; Get a character from the input buffer.
-	beq dab_pend	; Are we done with printing the buffer?
-	cmp (tptr), y
-	bcc dab_pend
-	beq chk_str
-	bcs dab_pend
-chk_str:
-	ply #2
-	inx
-	cpx #3
-	bne dabbed
-	ldx #0
-pnt_msg:
-	phy #2
-	txy
-	lda (mptr), y	; Get a character from the input buffer.
-	beq dab_peqnd	; Are we done with printing the buffer?
-	ply #2
-	jsl print_char
-	inx
-	jmp pnt_msg	; Keep printing the buffer.
-dab_pend:
-	ply #2
-	lda #1
-	jmp dab_end
-dab_peqnd:
-	ply #2
-	lda #0
-	jmp dab_end
-dab_end:
-	rtl
-
-print_buf:
-	phy #2
-	txy
-	lda (cptr), y	; Get a character from the input buffer.
-	beq cmd_clr	; Are we done with printing the buffer?
-	ply #2
-	jsl print_char
-	inx
-	jmp print_buf	; Keep printing the buffer.
-
-cmd_clr:
-	ply #2
-	lda #10
-	jsl print_char
-	jmp start
-
-.org $FFC0
-.qword reset
-
-.org $FF50
-.qword spin
-.qword spin
-.qword spin
-.qword spin
-.qword spin
-.qword spin
-.qword spin
-done
-
diff --git a/test/input.s b/test/input.s
deleted file mode 100644
index a8b0830..0000000
--- a/test/input.s
+++ /dev/null
@@ -1,338 +0,0 @@
-; Testing input.
-;
-; Writen in Sux assembly by
-; mr b0nk 500 <b0nk@b0nk.xyz>
-
-
-; Input buffer.
-.org $4000
-buffer:
-
-; Initalize some variables.
-.org $0
-scr_row:
-	.byte $0
-scr_col:
-	.byte $0
-a:
-	.byte $0
-b:
-	.byte $0
-c:
-	.byte $0
-d:
-	.byte $0
-e:
-	.byte $0
-string:
-	.byte "Please, type something.\n"
-string2:
-	.byte "You typed, "
-end:
-	.byte $0
-
-; String Pointer
-ptr:
-	.qword buffer
-
-; Main program
-.org $8000
-reset:
-	cps
-	ldx.w #$FFFF
-	txs
-	ldy #0
-	lda #0
-clr_buf:
-	cpy.w #$FFF
-	beq start
-	sta (ptr), y
-	iny
-	jmp clr_buf
-
-start:
-	tax		; Reset x.
-	tay		; Reset y.
-	jmp print
-
-rset_a:
-	lda #1
-
-read:
-	lda $C000	; Get control register.
-	beq rset_a	; Loop until we get a character.
-	lda #0
-	sta $C000
-	jmp getchar	; We got a key.
-sleep:
-	lda end
-	bne spin	; Are we done with getting input?
-
-print:
-	lda string, x	; Get character at offset x.
-	beq rset_a	; Did we find a null terminator?
-	sta $C001	; Print character.
-	inx		; Increment offset.
-	cmp #$A
-	beq inc_row
-	inc scr_col
-	jmp print
-inc_row:
-	inc scr_row
-	lda #0
-	sta scr_col
-	jmp print	; Keep printing more characters.
-
-getchar:
-	lda $C002	; Get typed character.
-	cmp #$1B
-	beq esc
-	cmp #$A
-	beq nl		; Did the user type a newline?
-	cmp #8
-	beq bs		; Did the user type a backspace?
-	cmp #$7F
-	beq bs		; Did the user type a backspace?
-echo:
-	sta a
-	ldx scr_col
-	cpx #79
-	bne echo_print
-linewrap:
-	inc scr_row
-	ldx #0
-	stx scr_col
-	lda scr_row
-	jsl update_pos
-echo_print:
-	lda a
-	sta $C001	; Echo typed character.
-	inc scr_col	; Increment the cursor's x coordinate.
-	sta (ptr), y	; Store typed character into the input buffer.
-	iny
-	jmp rset_a	; Start getting user input.
-
-esc:
-	lda $C000	; Skip the '['.
-	lda $C000	; Get the next character.
-	beq read	; We have an error, so discard it, and go back to getting user input.
-	lda $C002	; Get the escape code.
-	sta c		; Store the escape code, until we need it.
-	jsl isup	; Check if the user pressed up.
-	lda d
-	cmp #0
-	bne esc_end
-	jsl isdown	; Check if the user pressed down.
-	lda d
-	cmp #0
-	bne esc_end
-	lda #0
-	jsl isleft	; Check if the user pressed left.
-	lda d
-	cmp #0
-	bne esc_end
-	jsl isright	; Check if the user pressed right.
-esc_end:
-	lda #0
-	sta d
-	jmp rset_a	; Go back to getting user input.
-
-isup:
-	lda scr_row	; Is the cursor at the top of the screen?
-	beq isup_done	; Yes, so return.
-	lda c		; No, so load the escape code back into the accumulator.
-	cmp #$41	; Did the user press the up arrow key?
-	beq up		; Yes, so move the cursor up.
-isup_done:
-	rtl		; End of isup.
-
-isdown:
-	lda scr_row	; Start checking the y coordinate of the cursor.
-	cmp #23		; Is the cursor at the bottom of the screen?
-	beq isdown_done	; Yes, so return.
-	lda c		; No, so load the escape code back into the accumulator.
-	cmp #$42	; Did the user press the down arrow key?
-	beq down	; Yes, so move the cursor down.
-isdown_done:
-	rtl		; End of isdown.
-
-isright:
-	lda scr_col	; Start checking the x coordinate of the cursor.
-	cmp #79		; Is the cursor at the far right of the screen?
-	beq isright_end	; Yes, so return.
-	lda c		; No, so load the escape code back into the accumulator.
-	cmp #$43	; Did the user press the right arrow key?
-	beq right	; Yes, so move the cursor right.
-isright_end:
-	rtl		; End of isright.
-
-isleft:
-	lda scr_col	; Is the cursor at the far left of the screen?
-	beq isleft_done	; Yes, so return.
-	lda c		; No, so load the escape code back into the accumulator.
-	cmp #$44	; Did the user press the left arrow key?
-	beq left	; Yes, so move the cursor left.
-isleft_done:
-	rtl		; End of isleft.
-
-up:
-	dec scr_row
-	jsl update_pos
-	lda #1
-	sta d
-	jmp isup_done
-down:
-	inc scr_row
-	jsl update_pos
-	lda #1
-	sta d
-	jmp isdown_done
-right:
-	inc scr_col
-	jsl update_pos
-	jmp isright_end
-left:
-	dec scr_col
-	jsl update_pos
-	lda #1
-	sta d
-	jmp isleft_done
-
-update_pos:
-	lda #$1B	; Print an escape character
-	sta $C001	; to the screen.
-	lda #$5B	; Print '['
-	sta $C001	; to the screen, and start the escape sequence.
-	jsl getrow	; Start printing the row number to the screen.
-	jsl getcol	; Start printing the column number to the screen.
-	lda #$48	; Print 'H'
-	sta $C001	; to the screen.
-	rtl		; End of update_pos.
-getrow:
-	lda scr_row	; Get the cursor's y coordinate.
-	div #10		; Divide A by 10.
-	adc #$30	; Convert it to ascii, and
-	sta $C001	; print to the screen.
-	tba		; Get the remainder.
-	adc #$30	; Convert it to ascii, and
-	sta $C001	; print to the screen.
-	rtl		; End of getrow.
-getcol:
-	lda #$3B	; Print ';'
-	sta $C001	; to the screen.
-	lda scr_col	; Get the cursor's x coordinate.
-	div #10		; Divide A by 10.
-	adc #$30	; Convert it to ascii, and
-	sta $C001	; print to the screen.
-	tba		; Get the remainder.
-	adc #$30	; Convert it to ascii, and
-	sta $C001	; print to the screen.
-	rtl		; End of getrow.
-
-
-nl:
-	lda #$A
-	sta $C001
-	inc scr_row
-	lda #0		; Replace newline with a null terminator.
-	sta (ptr), y	; Store said terminator into the input buffer.
-	sta scr_col
-	ldy.w #0	; Reset y, to print the result.
-	jmp result
-
-back:
-	sta $C001	; Print backspace.
-	lda #0		; Put a null terminator, in place of the backspace.
-	sta (ptr), y	; Place it into the input buffer.
-	dey		; Decrement buffer offset.
-	dec scr_col
-	jmp read	; Get next character.
-
-bs:
-	cpy #0		; Are we at the start of the buffer?
-	beq rset_a	; We are, so do not store the backspace into the buffer.
-	jmp back	; We are not, so add the backspace to the buffer.
-
-result:
-	ldx scr_col
-	cpx #79
-	bne result_print
-linewrap2:
-	inc scr_row
-	ldx #$0
-	stx scr_col
-	jsl update_pos
-result_print:
-	lda string2, y
-	beq rset_y	; Reset y, if we hit the null terminator.
-	sta $C001	; Print 'You have typed, '
-	inc scr_col	; Increment the cursor's x coordinate.
-	iny		; Increment offset.
-	jmp result	; Keep printing.
-
-
-rset_y:
-	ldy.w #0	; Reset y.
-	jmp print_buf	; Print the input buffer.
-
-print_buf:
-	ldx scr_col
-	cpx #79
-	bne buf_print
-linewrap3:
-	inc scr_row
-	ldx #0
-	stx scr_col
-	jsl update_pos
-buf_print:
-	lda (ptr), y	; Get a character from the input buffer.
-	beq spin	; Are we done with printing the buffer?
-	sta $C001	; Print said character.
-	inc scr_col	; Increment the cursor's x coordinate.
-	iny
-	jmp print_buf	; Keep printing the buffer.
-
-scr_to_buf:
-	tax
-	mul #80
-	adc scr_col
-	tay
-	txa
-	rtl
-
-spin:
-	nop
-	nop
-	nop
-	jmp spin
-
-.org $1000
-v
-.org $1100
-v
-.org $1200
-v
-.org $8000
-v
-.org $8100
-v
-.org $8200
-v
-.org $8300
-v
-.org $FFC0
-.qword reset
-
-.org $FF50
-.qword spin
-.qword spin
-.qword spin
-.qword spin
-.qword spin
-.qword spin
-.qword spin
-.org $FF50
-v
-;done
-q
-
diff --git a/test/subroutine.s b/test/subroutine.s
index 7db1b87..d39fc15 100644
--- a/test/subroutine.s
+++ b/test/subroutine.s
@@ -24,7 +24,7 @@ start:
 	;stb $C010
 	;deb
 bench:
-	jsl clr_buf
+	jsr clr_buf
 	jmp bench
 
 clr_buf:
@@ -39,7 +39,7 @@ clr_buf:
 	jmp clr_buf	; Keep looping.
 clr_buf_end:
 	tay		; Set the index back to zero.
-	rtl		; End of clr_buf.
+	rts		; End of clr_buf.
 
 ;.org $C010
 ;.byte $1
diff --git a/test/test.s b/test/test.s
index 7c36579..14b9798 100644
--- a/test/test.s
+++ b/test/test.s
@@ -2,12 +2,15 @@
 ;
 ; Writen by mr b0nk 500 <b0nk@b0nk.xyz>
 .org $8000
-cps		; Clear the processor status register.
-lda.w #$1000	; Load 0x1000 into the accumulator.
-rol #$1		; Then rotate the accumulator left by 1 bit.
-jmp $8005	; And then loop.
+entry:
+	cps		; Clear the processor status register.
+	lda.w #$1000	; Load 0x1000 into the accumulator.
+loop:
+	rol #$1		; Then rotate the accumulator left by 1 bit.
+	jmp loop	; And then loop.
 
-.org $FFC0	; Reset vector.
-.qword $8000
-done
+.org $FFC0		; Reset vector.
+.qword entry
+a
+d